R code: summary(manova(y~x),test="Wilks", tol=0) Error: Error in qr.coef(rss.qr, D %% ss[[i]] %% D) : exact singularity in 'qr.coef'
For MANOVA, we need to calculate the inverse of (E+H) matrix. But in my data, (E+H) is singular, I think "solve" function is used in summary.manova function. I need to change "solve" to "ginv" function.
I do not know how to solve this problem. Do you have some alternative function can solve the singular issue?
Thank you very much.